[time-nuts] HP Stories: An architectural view of the HP 5060/5061 and awkward oscillator adjustments.

[Bob kb8tq]

Hi

Indeed there is both a minimum and a maximum working voltage for a properly derated electrolytic 
capacitor. We found that out in the middle of a design review when the customer’s team brought it 
up … (much to our surprise).

Bob

> On Feb 25, 2019, at 1:48 AM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> 
> --------
> In message <CADHrwpcdmyeguXoM69D2byW=DfKwMfi7_t-P=qYst7T7OO=EuA at mail.gmail.com>, Dana Whitlow writes:
> 
>> This would seem to imply that purposely overrating a 'lyt is pretty pointless.
>> 
>> Any comments on this notion?
> 
> I've always wondered that myself, and found very little documentation or
> wisdom available.
> 
> As I understand it, even very brief voltage spikes must be kept under the
> rated voltage, so overrating would buy some transient durability, but
> other than that...
> 
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.
> 
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